#17187B#17187B

#17187B is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.159 H 271.0°. Best body text is #FFFFFF at 14.45:1 contrast (WCAG AA passes).

Color values

HEX	#17187B
RGB	rgb(23, 24, 123)
HSL	hsl(239, 68%, 29%)
HSV	hsv(239, 81%, 48%)
CMYK	cmyk(81.3%, 80.5%, 0%, 51.8%)
CIE-LAB	lab(16.82, 36.05, -55.07)
CIE-LCH	lch(16.82, 65.82, 303.21°)
OKLab	oklab(29.84% 0.0027 -0.1595)
OKLCH	oklch(29.84% 0.159 271)
XYZ	xyz(4.2539, 2.2650, 18.9480)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17187B #7B7A17

analogous

#174A7B #17187B #48177B

triadic

#17187B #7B1718 #187B17

tetradic

#17187B #7B174A #7B7A17 #177B48

square

#17187B #7B174A #7B7A17 #177B48

split-complementary

#17187B #7B4817 #4A7B17

monochromatic

#05051A #0D0E47 #17187B #2122AF #3335D9

Accessibility & contrast

On white

14.45

#17187B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#17187B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17187B

14.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17187B	#FFFFFF	#000000	##FFFFFF
##17187B	1.00	14.45	1.45	14.45
#FFFFFF	14.45	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7E

Deuteranopia (green-blind)

#002479

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #17187b;
/* rgb */ color: rgb(23, 24, 123);
/* oklch */ color: oklch(29.8% 0.159 271.0);

Tailwind

colors: {
  custom: {
    50: '#6857a2',
    500: '#17187b',
    950: '#000000',
  },
}

SCSS

$custom: #17187b;
$custom-light: #6857a2;
$custom-dark: #000000;

JSON

{
  "hex": "#17187b",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 123
  },
  "hsl": {
    "h": 239.4,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.29841,
    "c": 0.15948,
    "h": 271
  },
  "luminance": 0.02265
}

Semantic roles & 50–950 ramp

primary

#17187B

secondary

#B0AF3E

accent

#EA3CEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #17187B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →